Alert archive / Minnesota / Flash Flood Warnings in 2024
Flash Flood Warning 7, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Jun 21, 2024, 10:09 PM CDT for 4 counties in Minnesota. It was in force for 6 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 21, 2024, 10:09 PM CDT (03:09 UTC)
- Expired
- Jun 22, 2024, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Le Sueur County, MN, Rice County, MN, Steele County, MN, Waseca County, MN
The radar
The Minneapolis radar (KMPX), 74 km from the middle of the area, began a volume at 03:09 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 21, 11:40 PM CDT | FLASH FLOOD | 3 S Waseca, MN | Some road closures south of Waseca. |
| Jun 21, 11:40 PM CDT | FLASH FLOOD | Janesville, MN | Some road closures around Janesville. |
| Jun 22, 2:30 AM CDT | FLASH FLOOD | 2 Ene Owatonna, MN | Maple Creek has left its banks and is flooding roads in and around Mineral Springs Park. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 3.2 hours before the alert went out and 74 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 583 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
727
WGUS53 KMPX 220309
FFWMPX
MNC079-131-147-161-220900-
/O.NEW.KMPX.FF.W.0007.240622T0309Z-240622T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Twin Cities/Chanhassen MN
1009 PM CDT Fri Jun 21 2024
The National Weather Service in the Twin Cities has issued a
* Flash Flood Warning for...
Southeastern Le Sueur County in south central Minnesota...
Rice County in south central Minnesota...
Steele County in south central Minnesota...
Waseca County in south central Minnesota...
* Until 400 AM CDT.
* At 1009 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain moving into the warned area. The expected rainfall rate
is 0.75 to 1.25 inches in 1 hour. Additional rainfall amounts of 1
to 3 inches are possible in the warned area. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4424 9398 4448 9366 4437 9304 4385 9305
4385 9377 4424 9377
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...0.75-1.25 INCHES IN 1 HOUR
$$
Borghoff1 follow-up statement
209
WGUS73 KMPX 220448
FFSMPX
Flash Flood Statement
National Weather Service Twin Cities/Chanhassen MN
1148 PM CDT Fri Jun 21 2024
MNC079-131-147-161-220900-
/O.CON.KMPX.FF.W.0007.000000T0000Z-240622T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Le Sueur MN-Rice MN-Steele MN-Waseca MN-
1148 PM CDT Fri Jun 21 2024
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 4 AM CDT SATURDAY FOR
SOUTHEASTERN LE SUEUR, RICE, STEELE AND WASECA COUNTIES...
At 1148 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen across southeastern Le Sueur and northwestern Waseca
counties. Additional rainfall amounts of 1 to 2 inches are possible
in the warned area. Waseca County reported some road closures. Flash
flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4424 9398 4448 9366 4437 9304 4385 9305
4385 9377 4424 9377
FLASH FLOOD...RADAR INDICATED
$$
BorghoffThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 8:39 PM CDT | Flash Flood Warning | MPX | Blue Earth, Watonwan | 5 hr |
| Jun 21, 9:29 PM CDT | Flash Flood Warning | MPX | Faribault, Freeborn, Martin | 6 hr |
| Jun 22, 2:23 AM CDT | Areal Flood Warning | MPX | Blue Earth, Waseca, Watonwan | 3 days |
| Jun 22, 2:29 AM CDT | Areal Flood Warning | MPX | Le Sueur, Rice, Steele, Waseca | 3 days |
| Jun 22, 12:22 PM CDT | Special Weather Statement | MPX | Redwood | 38 min |
| Jun 22, 1:58 PM CDT | Special Weather Statement | MPX | Waseca | 47 min |
| Jun 22, 2:38 PM CDT | Special Weather Statement | MPX | Steele | 22 min |
| Jun 22, 4:14 PM CDT | Areal Flood Warning | MPX | Faribault, Freeborn, Martin | 66 hr |
Nearby
Flash Flood Warnings in Minnesota, 2024Every flash flood warning in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.